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Abstract

This article describes the application of an IBM 1620 II Computer to the Kinetical Analysis of a card document transport. The skew, incremental velocity, and jitter with respect to an emitter of a card moving through the transport at 100 inches per second was determined. The above parameters were measured by recording the time at which the leading and trailing edges of punched holes passed a reference point in the (Image Omitted) read station and also by recording the time of occurrence of a transport emitter count. The computer was used as a high-speed data collection and analysis tool. To record the required times, a two-channel buffer was caused to sample the output of a counter which was driven by a 100 KHz oscillator. The buffer then transferred the data to the core of the IBM 1620 II Computer.

Country

United States

Language

English (United States)

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Page 1 of 10

Application of Computer to the Kinetic Analysis of DOCUMENT Transport

This article describes the application of an IBM 1620 II

Computer to the Kinetical Analysis of a card document transport. The
skew, incremental velocity, and jitter with respect to an emitter of
a card moving through the transport at 100 inches per second was
determined. The above parameters were measured by recording the time
at which the leading and trailing edges of punched holes passed a
reference point in the

(Image Omitted)

read station
and also by recording the time of occurrence of a transport emitter
count. The computer was used as a high-speed data collection and
analysis tool. To record the required times, a two-channel buffer
was caused to sample the output of a counter which was driven by a
100 KHz oscillator. The buffer then transferred the data to the core
of the IBM 1620 II Computer. Two channels were required to
discriminate between hole edges and emitter time. The card velocity
of 100 inches per second and the clock rate of 100 KHz resulted in a
spatial resolution of 0.001 inches. Six decimal digits were required
to uniquely define the discrete sample points occurring within the
time to process 100 cards. The data from a burst of 100 transported
cards with 18 holes per card resulted in 32,400 digits being stored
within 4 seconds. The analysis of the data was performed using the
FORTRAN

(Image Omitted)

language with the use of an
assembly language subroutine for the control of the data collection
task. The power gained through the flexibility of this on-line
software analysis was demonstrated when initial results indicated a
need for different data, and this was quickly accomplished by a
program change. The ability to uniquely measure, within 0.001 inch,
the location of every hole with respect to an emitter pulse, on 100
cards, under normal operating conditions provided information that
was not available by any other known measuring technique.

(Image Omitted)

An IBM 1620 II Computer was used to determine
the skew, incremental velocity, and jitter, with respect to an
emitter, of a card moving through a transport at 100 inches/second.
This was done by recording the time when the leading and trailing
edges of the punched holes passed a reference point in the read
station, and by recording the occurrence of a transport emitter
count. A two-channel buffer sampled the output of a counter driven by
a 100 KHz oscillator. (Two channels were needed to discriminate
between hole edges and emitter time.) The buffer transferred the

1

Page 2 of 10

data to the 1620's core storage. The 100-inch/second card velocity
and 100 KHz clock rate resulted in a spatial resolution of 0.001
inch. Six decimal digits were used to uniquely define the discrete
sample points occurring while processing 100, 18-hole cards. The
data from the cards resulted in 32,400 digits being stored within 4
seconds. FORTRAN, with an assembly language subroutine, was used to
analyze the data. T...